CN209459518U - Self protection type's priming system firing circuit - Google Patents
Self protection type's priming system firing circuit Download PDFInfo
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- CN209459518U CN209459518U CN201822107148.1U CN201822107148U CN209459518U CN 209459518 U CN209459518 U CN 209459518U CN 201822107148 U CN201822107148 U CN 201822107148U CN 209459518 U CN209459518 U CN 209459518U
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Abstract
The utility model discloses a kind of self protection type's priming system firing circuit, solve the problems, such as that existing priming system igniting front and back safeguard measure safety not in place is poor.Including preceding excitation driving circuit (1), circuit (2) are protected from being shorted, it controls ignition drive circuit (3), monostable flipflop (4) and after motivate adaptive switched fiery road circuit (5), excitation end-coil and rear excitation end-coil before being provided in relay switch (J1A), it electric must make contact rear equal reliable ground before ignition by two coils, and after pulse width type " control igniting " output, it is to realize state overturning from short circuit protection circuit by monostable trigger, fiery road is cut off certainly, regardless of firer acts success or not, restore ground connection and be shorted guard mode in firer both ends, for Initiator Safety use, abnormality processing and miniaturization igniter design etc. provide powerful guarantee.
Description
Technical field
The present invention relates to a kind of underwater kit igniter, in particular to the firing circuit of a kind of underwater kit igniter and from
Protection formula ignition method.
Background technique
Priming system is the explosion part equipped with explosive, such as blasting bolt, they are the connections by circuit, are fired with current point
Explosive in explosion part, it is mechanically decoupled to realize by the explosion of explosion part；Under water in separating mechanism priming system application
It is relatively broad；These underwater kit igniters typically rely on machine insurance device to realize the switching switching on circuit fire road, igniting
Before, priming system accesses firing circuit, and priming system is under off state at this time, no ground short circuit safeguard measure, when igniting,
Reed or pressure stroke part are lighted a fire when by walking to realize that conversion is connected on fiery road, but after ignition signal provides, priming system
It is constantly under fiery road connected state, if meeting priming system exception, fails to normal burst movement, need to carry out subsequent maintenance
Dismantlement work, the priming system being constantly under fiery road connected state have the danger exploded at any time.
Summary of the invention
The present invention provides a kind of self protection type's priming system firing circuit and self protection type's ignition methods, solve existing fire
The technical problem of work product igniting front and back safeguard measure safety difference not in place.
The present invention is to solve the above technical problem by the following technical programs:
A kind of self protection type's priming system firing circuit, including preceding excitation driving circuit, from be shorted protection circuit, control igniting
Driving circuit, monostable flipflop and after motivate adaptive switched fiery road circuit, the first current-limiting resistance in preceding excitation driving circuit
One end be connected with the fiery road signal of opening, the other end of the first current-limiting resistance and the base stage of the first triode link together, the
The emitter of one triode is grounded, and the collector of the first triode is connect with from the anode for being shorted first diode in protection circuit
Together, the cathode of first diode is connected on control circuit power supply, from before the relay switch being shorted in protection circuit
One end of excitation end-coil is connected on control circuit power supply, the other end and diode of the preceding excitation end-coil of relay switch
Anode link together, the rear excitation end-coil of relay switch motivates end-coil together with the second diodes in parallel afterwards
It is connected on control circuit power supply with one end after the second diodes in parallel, after rear excitation end-coil and the second diodes in parallel
The other end links together with the collector of the third transistor in adaptive switched fiery road circuit is motivated afterwards, the transmitting of third transistor
Pole ground connection, is connected with priming system, the normally closed termination of the contact of relay switch between the contact common end of relay switch and ground
Ground, the contact normally open end of relay switch and the emitter of the second triode in control ignition drive circuit link together,
The collector of second triode links together with control circuit power supply, the base stage of the second triode by the second current-limiting resistance with
Priming system ignition signal end links together, and the input terminal of monostable flipflop is connected on priming system ignition signal end, single
The output end of steady state trigger is linked together by the base stage of third current-limiting resistance and third transistor.
Relay switch is single-pole double-throw type switch.
A kind of self protection type's ignition method of self protection type's priming system, comprising the following steps:
The first step opens fiery road signal, the first limit in the preceding one end connection for motivating the first current-limiting resistance in driving circuit
The other end of leakage resistance and the base stage of the first triode link together, the emitter ground connection of the first triode, the first triode
Collector and link together from the anode of first diode in protection circuit is shorted, the cathode of first diode is connected to control
On circuit power processed, control circuit electricity is connected to from one end of the preceding excitation end-coil for the relay switch being shorted in protection circuit
On source, the other end of preceding excitation end-coil and the anode of diode of relay switch link together, after relay switch
Motivate end-coil together with the second diodes in parallel, it is rear that one end after end-coil and the second diodes in parallel is motivated to be connected to control
On circuit power processed, the rear other end motivated after end-coil and the second diodes in parallel and motivated in the circuit of adaptive switched fire road afterwards
The collector of third transistor links together, the emitter ground connection of third transistor, in the contact common end of relay switch
Priming system, the contact normal-closed end ground connection of relay switch, the contact normally open end of relay switch and control are connected between ground
The emitter of the second triode in ignition drive circuit links together, the collector and control circuit power supply of the second triode
It links together, the base stage of the second triode is linked together by the second current-limiting resistance and priming system ignition signal end, in fire
The input terminal of monostable flipflop is connected on work product ignition signal end, the output end of monostable flipflop passes through third current limliting electricity
It hinders and links together with the base stage of third transistor；
Second step, the fiery road high level signal of connection opening on the input terminal of the first current-limiting resistance, the first triode ON,
Preceding excitation end-coil in relay switch obtains electric, the contact action in relay switch, and contact common end is by being connected to ground
Contact normal-closed end connection status, which is transformed into, enters the dynamic electricity of connection control point fireflood with contact normally open end connection status, entire circuit
Line state；
Third step is believed in the input terminal access priming system igniting square wave for controlling the second current-limiting resistance in ignition drive circuit
Number, the second triode ON, control circuit power supply passes sequentially through the second triode, contact normally open end, contact common end and firer
Product provide initial firing current for priming system；
4th step, at the end of firing action, i.e., priming system igniting square-wave signal is monostable when changing to low level by high level
After the input terminal of state trigger receives the signal, a pulse width signal, pulse letter are exported in the output end of monostable flipflop
Number third transistor is connected, the rear excitation end-coil of relay switch obtains electric, makes the contact action of relay switch, contact is public
End is controlled ignition drive circuit and made by being transformed into contact normally open end connection status with contact normal-closed end connection status, cutting altogether
Priming system ground connection.
Circuit structure of the present invention is simple, and priming system has switch-mode circuitries ground connection to be shorted protection before movement, without complexity
Machine insurance device is to realize state overturning from short circuit protection circuit by monostable trigger after the output of pulse width type ignition signal,
Fiery road is from cutting off, and regardless of firer acts success or not, firer both ends restore ground connection and are shorted guard mode, make for Initiator Safety
Powerful guarantee is provided with, abnormality processing and miniaturization igniter design etc..
Detailed description of the invention
Fig. 1 is electrical block diagram of the invention.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawing:
A kind of self protection type's priming system firing circuit, including preceding excitation driving circuit 1, from be shorted protection circuit 2, control point
Fiery driving circuit 3, monostable flipflop 4 and after motivate adaptive switched fiery road circuit 5, the first limit in preceding excitation driving circuit 1
One end of leakage resistance R1 is connected with the fiery road signal of opening, the base stage company of the other end of the first current-limiting resistance R1 and the first triode V1
It is connected together, the emitter ground connection of the first triode V1, the collector of the first triode V1 is protected first in circuit 2 with from short circuit
The anode of diode V4 links together, and the cathode of first diode V4 is connected on control circuit power vd D, protects from being shorted
One end of the preceding excitation end-coil of relay switch J1A in circuit 2 is connected on control circuit power vd D, relay switch
The anode of the other end and diode V4 of the preceding excitation end-coil of J1A links together, the rear excitation end line of relay switch J1A
Circle is connected in parallel with the second diode V5, and one end after rear excitation end-coil is in parallel with the second diode V5 is connected to control electricity
On the power vd D of road, the other end after rear excitation end-coil is in parallel with the second diode V5 is motivated with after in adaptive switched fiery road circuit 5
The collector of third transistor V3 link together, the emitter ground connection of third transistor V3, in the touching of relay switch J1A
Priming system 6, the contact normal-closed end K6 ground connection of relay switch J1A, relay switch J1A are connected between head common end K4 and ground
Contact normally open end K5 and control ignition drive circuit 3 in the emitter of the second triode link together, the second triode
Collector link together with control circuit power vd D, the base stage of the second triode V2 passes through the second current-limiting resistance R2 and fire
Work product ignition signal end links together, and the input terminal of monostable flipflop 4 is connected on priming system ignition signal end, monostable
The output end of state trigger 4 is linked together by third current-limiting resistance R3 and the base stage of third transistor V3.
Relay switch J1A is single-pole double-throw type switch；First diode V4 be freewheeling diode, protect the components from after
Electric apparatus coil induced voltage punctures or burns out, and the high electromotive force for generating it is consumed in a manner of afterflow in circuit.
A kind of self protection type's ignition method of self protection type's priming system, comprising the following steps:
The first step connects in preceding one end for motivating the first current-limiting resistance R1 in driving circuit 1 and opens fiery road signal, and first
The other end of current-limiting resistance R1 and the base stage of the first triode V1 link together, the emitter ground connection of the first triode V1, the
The collector of one triode V1 links together with from the anode for being shorted first diode V4 in protection circuit 2, first diode
The cathode of V4 is connected on control circuit power vd D, from the preceding excitation end line for the relay switch J1A being shorted in protection circuit 2
One end of circle is connected on control circuit power vd D, the other end and diode V4 of the preceding excitation end-coil of relay switch J1A
Anode link together, rear excitation end-coil and the second diode V5 of relay switch J1A is connected in parallel, and motivates end afterwards
One end after coil is in parallel with the second diode V5 is connected on control circuit power vd D, rear to motivate end-coil and the two or two pole
The other end after pipe V5 is in parallel links together with the collector of the third transistor V3 in adaptive switched fiery road circuit 5 is motivated afterwards,
The emitter of third transistor V3 is grounded, and is connected with priming system 6 between the contact common end K4 and ground of relay switch J1A,
The contact normal-closed end K6 of relay switch J1A is grounded, the contact normally open end K5 and control ignition drive circuit of relay switch J1A
The emitter of the second triode in 3 links together, and the collector and control circuit power vd D of the second triode are connected to one
It rises, the base stage of the second triode V2 is linked together by the second current-limiting resistance R2 and priming system ignition signal end, in priming system
The input terminal of monostable flipflop 4 is connected on ignition signal end, the output end of monostable flipflop 4 passes through third current-limiting resistance
The base stage of R3 and third transistor V3 link together；
Second step, fiery road high level signal, the first triode V1 are opened in connection on the input terminal of the first current-limiting resistance R1
It is connected, the preceding excitation end-coil in relay switch J1A obtains electric contact action in relay switch J1A, contact common end K4
By the contact normal-closed end K6 connection status being connected to ground be transformed into contact normally open end K5 connection status, entire circuit, which enters, to be connect
Logical control 3 state of ignition drive circuit；
Third step accesses priming system igniting side in the input terminal for controlling the second current-limiting resistance R2 in ignition drive circuit 3
Wave signal, the second triode V2 conducting, control circuit power vd D pass sequentially through the second triode V2, contact normally open end K5, contact
Common end K4 and priming system 6 provide initial firing current for priming system 6；
4th step, at the end of firing action, i.e., priming system igniting square-wave signal is monostable when changing to low level by high level
After the input terminal of state trigger 4 receives the signal, a pulse width signal is exported in the output end of monostable flipflop 4, pulsewidth is wide
Degree is determined that third transistor V3 is connected in the pulse signal, relay switch J1A by monostable flipflop internal resistance and capacitor
Rear excitation end-coil obtain electric, make the contact action of relay switch J1A, contact common end K4 with contact normally open end K5 by connecting
State is transformed into be controlled ignition drive circuit 3 and is grounded priming system 6 with contact normal-closed end K6 connection status, cutting.
The present invention can realize the ground protection from short circuit of priming system before and after priming system igniting, and can after igniting
Fiery road is voluntarily cut off, while being participated in without machine insurance device, direction has been guided for the development of subminaturization igniter, to adapt to difference
Application；In the abnormal not operating situation of firer's appearance, the links such as firer are dismantled or removed to igniter in personnel, by
Yu Huolu is voluntarily cut off, and firer brings safety guarantee from ground connection is shorted, for maintenance personal and equipment safety.
Claims (2)
1. a kind of self protection type's priming system firing circuit, including preceding excitation driving circuit (1), short circuit protection circuit (2), control certainly
Ignition drive circuit (3), monostable flipflop (4) and after motivate adaptive switched fiery road circuit (5), which is characterized in that in preceding excitation
One end of the first current-limiting resistance (R1) in driving circuit (1) is connected with the fiery road signal of opening, the first current-limiting resistance (R1) it is another
One end and the base stage of the first triode (V1) link together, the emitter ground connection of the first triode (V1), the first triode
(V1) collector links together with from the anode for being shorted first diode (V4) in protection circuit (2), first diode
(V4) cathode is connected on control circuit power supply (VDD), from before the relay switch (J1A) being shorted in protection circuit (2)
Excitation end-coil one end be connected on control circuit power supply (VDD), the preceding excitation end-coil of relay switch (J1A) it is another
It holds and links together with the anode of diode (V4), the rear excitation end-coil and the second diode (V5) of relay switch (J1A)
It being connected in parallel, one end after rear excitation end-coil is in parallel with the second diode (V5) is connected on control circuit power supply (VDD),
The other end after excitation end-coil is in parallel with the second diode (V5) afterwards and motivate afterwards in adaptive switched fire road circuit (5) the three or three
The collector of pole pipe (V3) links together, the emitter ground connection of third transistor V3, public in the contact of relay switch (J1A)
It is connected with priming system (6) between end (K4) and ground altogether, contact normal-closed end (K6) ground connection of relay switch (J1A), relay is opened
The emitter of the contact normally open end (K5) and the second triode in control ignition drive circuit (3) of closing (J1A) links together,
The collector of second triode links together with control circuit power supply (VDD), and the base stage of the second triode (V2) passes through second
Current-limiting resistance (R2) links together with priming system ignition signal end, is connected with monostable trigger on priming system ignition signal end
The input terminal of device (4), the output end of monostable flipflop (4) pass through the base of third current-limiting resistance (R3) and third transistor (V3)
Pole links together.
2. a kind of self protection type's priming system firing circuit according to claim 1, which is characterized in that relay switch
(J1A) it is switched for single-pole double-throw type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822107148.1U CN209459518U (en) | 2018-12-16 | 2018-12-16 | Self protection type's priming system firing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822107148.1U CN209459518U (en) | 2018-12-16 | 2018-12-16 | Self protection type's priming system firing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209459518U true CN209459518U (en) | 2019-10-01 |
Family
ID=68040814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822107148.1U Active CN209459518U (en) | 2018-12-16 | 2018-12-16 | Self protection type's priming system firing circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209459518U (en) |
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2018
- 2018-12-16 CN CN201822107148.1U patent/CN209459518U/en active Active
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